16" .223 Wylde M4-Enhanced Stainless Steel Fluted Barrel

16" .223 Wylde M4-Enhanced Stainless Steel Fluted Barrel
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  • Mid America Armament
  • Availability: In Stock
  • $274.95
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This is a custom 16” stainless steel barrel designed around the original M4 barrel profile. We have made a few changes to that standard to enhance versatility, reliability and accuracy: 

The M4-E barrel is chambered in .223 Wylde - optimized to provide the accuracy of match-grade .223 Remington ammunition, yet retain reliability with 5.56 NATO ammunition. 

Our barrels use a 1:8 twist rate, which is optimized for 55-69 grain bullets, but also provides good performance with larger bullets. The barrel uses a mid-length gas system. This reduces felt recoil, which is easier on both the gun and the shooter. 

The fluting reduces weight at the end of the barrel, where it matters to enhance performance.

The barrel features dual indents 180° from the gas hole for easy gas block location and installation. It is recommended for use with the MAA low profile gas block. We have removed the cuts for the M203 grenade launcher, taking away the negative harmonic effect and improving accuracy. 


  • 410 stainless steel 
  • Double stress relief
  • Button rifled
  • Chambered in .223 Wylde 
  • 1:8 twist rate 
  • Accepts .750” gas block
  • 1/2”-28 threads 
  • 16.2” overall length 
  • 1.72 lbs with barrel extension installed

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